changes

made the globe drawing more perfectly spherical by changing the resolution to "360,360,360,360"
for
http://en.wikipedia.org/wiki/Eratosthenes [img]http://upload.wikimedia.org/wikipedia/commons/thumb/9/98/Eratosthenes.png/220px-Eratosthenes.png[/img]
Illustration showing a portion of the globe showing a part of the African continent. The sun beams shown as 2 rays hitting earth at Syene and Alexandria. Angle of sun beam and the gnomons (vertical sticks) is shown at Alexandria which allowed Eratosthenes' estimates of radius and circumference of Earth.